I'm looking for a way to implement a generic Timing class as a
decorator or come up with a solution for timing code execution without
cluttering the code.
In my web app, there is a perceived need to measure the execution time
of many function calls and database queries using ZFDebug and its
timing plugin.
An initial crack at this resulted in lots and lots of timing code
interspersed with real code, which made modification and debugging a
bit nightmarish.
As a solution, I wrote a very bare-bones Timing class, a decorator
that would encapsulate an object, intercept calls to the object via
the __call method, start a timer, pass the call through to the
encapsulated object, then stop the timer.
My interface went like this:
$obj = new Thing();
Timer::time( $obj ); // $obj becomes a Timer obj with $obj inside it
$obj->thingMethod(); // Timer passes call to Timer->obj
This worked great (and if anyone's interested I can pass on the code)
-- my timers worked, and the code originally written for $obj didn't
even notice -- except in cases where a function used type hinting and
I got Unknown errors. I'm using Zend Framework, and (for instance) I
was curious about the timing on my Initializer (a controller plugin),
so I thought the following would do the trick:
$initializer = new Initializer($env);
Timer::time( $initializer );
$frontController->registerPlugin( $initializer );
But machinery deep in the bowels of Zend does type hinting for a
Zend_Controller_Plugin_Abstract object, not a Timer, and so an error
is raised.
Whole point is that I want to be able to use this Timer class on
anything. Seems like I should be able to if it weren't for the type
hinting.
Is there any way to fool a function into thinking my Timer is the same
class as Timer->obj?
Is there another way to cleanly wrap method calls for timing/logging
purposes?
Any other good patterns for measuring code execution time without
cluttering the code?
I found this discussion from last December, asking a very similar
question, but it seemed unresolved:
<http://www.mail-archive.com/php-general@xxxxxxxxxxxxx/msg238889.html>
--
David Kurtz
dkurtz@xxxxxxxxxxxxxx
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